CN206072988U - Lens combination and the illuminator using lens combination - Google Patents

Abstract

The utility model discloses a lens combination and an illuminating device using the lens combination. The lens combination is used to arrange at least a first light source and a second light source, and includes a first lens and a second lens. The first lens includes a first light incident surface , the first light-emitting surface and the first installation space on one side of the first light-incident surface for arranging the first light source; the second lens includes a second light-incident surface, a second light-exit surface and a The second installation space for arranging the second light source; wherein, the first light exit surface and/or the first light incident surface are provided with a number of ribs uniformly distributed along the extension direction of the first lens, each rib along the first light A lens extends in a curved shape, and the projection of the ribs in the horizontal direction is a straight line. Through the lens combination in the lighting device, the light-emitting surface of at least one of the lenses is provided with ridges along the extending direction, which avoids the situation that the light emitted from the light-emitting surface forms a bright circle, further improves the uniformity of the light spot, and improves the illumination of the lighting device. Effect.

Description

Lens combination and lighting device using lens combination

technical field

The utility model relates to the technical field of lighting, in particular to a lens combination and a lighting device using the lens combination.

Background technique

At present, the lighting device usually includes a light source module and a lens matched with the light source module, so as to focus or collimate the light emitted by the above-mentioned light source module through the lens.

In the prior art, in order to achieve the above-mentioned purpose of focusing or collimating light, when the lighting device includes multiple light sources, a lens covering the light source is provided for each light source, so that the lighting device including multiple light sources Multiple lenses are required.

However, if a lens covering the light source is respectively provided for different light sources, it is difficult to ensure that the light emitted by the different light sources passes through the lens covering the light source. , to obtain the same light distribution effect, thereby affecting the lighting effect of the lighting device.

Utility model content

The purpose of the embodiment of the utility model is to provide a lens combination and a lighting device using the lens combination, so as to solve the problem in the prior art that it is difficult to ensure that the light emitted by different light sources passes through the lens covered on the light source to obtain The same problem with light distribution effect.

In order to achieve the above purpose, the lens combination and the lighting device using the lens combination provided by the embodiment of the utility model are realized as follows:

A lens combination for at least arranging a first light source and a second light source, comprising:

The first lens, the first lens is ring-shaped, and includes a first light-incident surface, a first light-exit surface, and a first installation space on one side of the first light-incidence surface for arranging the first light source, The first light incident surface and the first light exit surface are curved; and

The second lens includes a second light incident surface, a second light exit surface, and a second installation space on one side of the second light incident surface for arranging the second light source, the second light incident surface and the second light incident surface The second light-emitting surface is curved;

The first light exit surface and/or the first light incident surface are provided with a number of ribs uniformly distributed along the extension direction of the first lens, and each of the ribs extends in a curved shape along the first lens, And the projection of the ribs in the horizontal direction is a straight line.

Further, each of the ribs extends in a curved shape along the radial direction of the first lens.

Further, the curvature of the ridge is consistent with the curvature of the first light incident surface and/or the first light exit surface.

Further, the first lens and the second lens are provided integrally or separately.

Further, the second lens is in the shape of a ring, and the plurality of ribs are uniformly distributed along the circumferential direction of the first lens.

Further, the first lens is configured such that the angle between the incident light emitted by the first light source and the normal is greater than the outgoing light and the normal obtained after the incident light passes through the light incident surface and the light exit surface The included angle; the second lens is configured such that the included angle between the incident light emitted by the second light source and the normal is larger than the outgoing light obtained after the incident light passes through the light incident surface and the light exit surface and the normal The angle of the line.

Further, the second lens is in the shape of a ring or a point, and if the second lens is in the shape of a ring, the center of the first lens coincides with the center of the second lens; the second lens If the two lenses are point-shaped, the second lens is located at the center of the first lens.

Further, the surface shape of the first section of the first lens obtained along the first section line is inconsistent with the surface type of the second section of the second lens obtained along the first section line, and the first section line through the center of the first lens.

Further, the second lens is in the shape of a ring, and the second light exit surface and/or the second light incident surface are provided with a number of ribs continuously distributed along the circumferential direction of the second lens, and each of the The ribs extend in a curved shape along the radial direction of the second lens.

A lighting device using a combination of lenses, comprising:

case;

a light source module, located in the housing, including a substrate and a first light source and a second light source disposed on the substrate; and

A lens combination matched with the light source module, the lens combination includes:

The first lens includes a first light incident surface, a first light exit surface, and a first installation space on one side of the first light incident surface for arranging the first light source, the first light incident surface and the first light incident surface The first light-emitting surface is curved; and

The second lens includes a second light incident surface, a second light exit surface, and a second installation space on one side of the second light incident surface for arranging the second light source, the second light incident surface and the second light incident surface The second light-emitting surface is curved;

The first light exit surface and/or the first light incident surface are provided with a plurality of ribs continuously distributed along the extension direction of the first lens, and each of the ribs extends in a curved shape along the first lens, And the projection of the ribs in the horizontal direction is a straight line.

Further, the illuminating device further includes a reflective part disposed in the housing and arranged in a ring shape.

Further, the reflective member includes an annular first reflective surface and a second reflective surface, the first reflective surface has a sloped surface, and the second reflective surface has a curved surface.

Further, the first light source is accommodated in the first lens, and the second light source is accommodated in the second lens.

Further, the first lens is in the shape of a ring, and the first light source is in the shape of a single ring or multiple rings.

Further, the lighting device further includes a driving power supply assembly electrically connected to the light source module.

It can be seen from the above technical solutions provided by the utility model that the lens combination used in the lighting device of the utility model avoids the formation of bright light by the light emitted from the light-emitting surface by arranging a number of ribs on the light-emitting surface of at least one of the lenses along the extending direction. In the case of a circle, the uniformity of the light spot is further improved, and the lighting effect of the lighting device is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments recorded in the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

Fig. 1 is a perspective view of the lighting device provided by Embodiment 1 of the present utility model;

Fig. 2 is a three-dimensional exploded view of the lighting device provided by Embodiment 1 of the present utility model;

Fig. 3 is a three-dimensional cross-sectional schematic view of the lighting device along the direction of line A-A in Fig. 1;

Fig. 4 is a schematic cross-sectional view of the lens assembly along the A-A line direction of Fig. 1;

Fig. 5 is the front view of the three-dimensional cross-sectional schematic diagram shown in Fig. 3;

Fig. 6 is a schematic structural view of the lens combination on the side of the light incident surface in Embodiment 1 of the present utility model;

7a and 7b are schematic diagrams of the arrangement of the first light source on the light source module in Embodiment 1 of the present utility model;

Fig. 8 is a schematic diagram of the light distribution curve in Embodiment 1 of the utility model;

Fig. 9 is an optical path diagram of the light emitted by the light source passing through the light incident surface and the light exit surface of the lens in Embodiment 1 of the present utility model;

Fig. 10 is an optical path diagram of light emitted by the first and second light sources passing through the lens combination in the embodiment of the present invention;

Fig. 11 is a perspective view of the lighting device provided by Embodiment 2 of the present invention;

Fig. 12 is a three-dimensional exploded view of the lighting device provided by Embodiment 2 of the present invention;

Fig. 13 is a three-dimensional exploded view of another angle of the lighting device provided by Embodiment 2 of the present utility model;

Fig. 14 is a perspective view of the lighting device connected to the drive power supply assembly provided by Embodiment 2 of the present utility model;

Fig. 15 is a schematic three-dimensional cross-sectional view of the lighting device along the direction of the B-B line in Fig. 1;

Fig. 16 is a schematic cross-sectional view of the lens combination along the B-B line direction of Fig. 1;

Fig. 17 is a front view of the stereoscopic cross-sectional schematic diagram shown in Fig. 15;

Fig. 18 is another schematic diagram of the arrangement of the first light source on the light source module in Embodiment 2 of the present utility model;

Fig. 19 is a schematic structural view of the lens assembly on the side of the light-emitting surface in Embodiment 2 of the present utility model;

Fig. 20 is a top view of the lens combination in Embodiment 2 of the present utility model;

Fig. 21 is the optical path diagram of the cross-section of the lens combination of embodiment 1 along the C-C line direction of Fig. 2;

FIG. 22 is an optical path diagram of a cross-section of the lens combination of Embodiment 2 along the line D-D in FIG. 19 .

detailed description

In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment. Obviously, The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

Example 1

Embodiment 1 of the present utility model provides a lighting device to solve the problem in the prior art that it is difficult to ensure that the light emitted by each light source included in the above lighting device passes through each lens to obtain a consistent light pattern.

Referring to FIG. 1 and FIG. 2 , the lighting device 100 of this embodiment may include a housing 10 , a light source module 40 disposed in the housing 10 , and a lens assembly 30 matched with the light source module 40 .

The light source module 40 may include a substrate 41 , a plurality of first light sources 42 arranged in a ring shape arranged on the first surface 410 of the substrate 41 , and one or more second light sources arranged on the first surface 410 of the substrate 41 43. Wherein, the second light source 43 is located at the center of the ring of the first light source 42 . The above-mentioned first light source 42 and the second light source 43 may be light emitting diodes (Light Emitting Diode, LED), or other types of light emitters. The above-mentioned light source module 40 also includes electronic devices (not shown) disposed on the substrate 41 . The light source module 40 can be integrated with a driving module (not shown) for driving the light source module 40, and the driving module can be integrated on the first surface 410 of the substrate 41, or opposite to the first surface set on the second surface.

Correspondingly, the lens assembly 30 may include a base 33 for attaching to the base plate 41 of the above-mentioned light source module 40, a ring-shaped first lens 32 connected to the base 33, and a ring-shaped first lens 32 connected to the base 33 and positioned at The second lens 31 is the center of the first lens 32 . Wherein, the above-mentioned first lens 32 is arranged in cooperation with the first light source 42 of the above-mentioned light source module, and the above-mentioned second lens 31 is arranged in cooperation with the second light source 43 of the above-mentioned light source module 40 .

It is worth mentioning that the above-mentioned lens combination 30 is a lens component comprising at least two lenses, and the at least two lenses may be integrally arranged or not integrally arranged, and the number of lenses included in the lens combination 30 is not limited by limited to this. In the embodiment of the present application, the above-mentioned second lens 31 may be annular or non-annular (such as point). Preferably, if the first lens 32 and the second lens 31 are both annular, the center of the first lens 32 (that is, the center of the circle presented by the lens) coincides with the center of the second lens 31; If the first lens 32 is annular, and the second lens 31 is point-shaped, then the position of the second lens 31 can be arranged on the ring center of the first lens 32, and further, if the second lens 31 is Dot shape, the center of the dot of the second lens 31 can be set to coincide with the center of the ring of the first lens 32 . Of course, in a feasible embodiment of the present application, the mutual positions of the first lens 32 and the second lens 31 are not limited.

Preferably, in order to further improve the luminous effect and aesthetics of the lighting device 100, the above-mentioned lighting device 100 may further include a reflective member 20 disposed in the casing 10 and arranged in a ring shape, and the reflective member 20 surrounds the first outside the lens 32. The reflective component 20 includes an arc-shaped reflective surface 21 and an opening 22 for the lens assembly 30 to pass through during installation. The above-mentioned reflective member 20 may adopt specular reflection, or diffuse reflection, or absorption type reflection, and the like.

In the embodiment of the present utility model, the housing 10 may include a bottom wall 12 and a side wall 11 connected to the bottom wall 12. The bottom wall 12 is provided with a plurality of fixing screw holes 13. Correspondingly, the substrate of the light source module 40 41 is provided with a plurality of notches 45 . A plurality of fixing through holes 34 are disposed on the base 33 of the lens assembly 30 . The sidewall 11 of the casing 10 is further provided with a plurality of locking portions 110 protruding inwardly from the sidewall 11 . The reflective part 20 is also provided with a mounting wall 23 for fitting with the side wall 11 of the casing 10, which extends downward from the upper surface 24 of the reflective part 20 as a vertical side wall and surrounds the reflective surface provided on the reflective part 20 21 peripheral. The mounting wall 23 defines a plurality of fastening holes 230 for matching with the fastening portion 110 .

During the installation process, the light source module 40 is first placed on the bottom wall 12 of the casing 10, and during the placement process, the plurality of notches 45 of the light source module 40 are respectively fitted on the bottom wall 12 There are a plurality of fixing screw holes 13 , and then the lens assembly 30 is placed on the first surface 410 of the substrate 41 on which the first light source 42 is provided. Similarly, during the placement process, the positions of the multiple fixing through holes 34 of the lens assembly 30 and the multiple fixing screw holes 13 can be matched, and the above-mentioned light source module 40 and the lens combination can be connected through the bolts 70 matched with the fixing screw holes 13. 30 is fixed in the housing 10. Of course, the above-mentioned combination of the light source module 40 and the lens assembly 30 is not limited to this, and may also be glued, riveted, or the like. Subsequently, the reflective component 20 is placed on the base 33 of the lens assembly 30, and its reflective surface 21 surrounds the periphery of the first lens 32 arranged on the lens assembly 30, and is realized by the interfitting buckling part 110 and the buckling hole 230. The reflection member 20 and the casing 10 are fixed to each other. After assembly, the upper surface 24 of the reflective member 20 is flush with the upper surface 14 of the casing 10, and an electronic device ( Not shown in the figure) the accommodating space 25. In this embodiment, by distributing the electronic components in the accommodating space 25 , the thickness of the lighting device can be effectively reduced, making the lighting device lighter and thinner. Wherein, the electronic device may include a driving module (not shown), so that the driving module is also arranged in the accommodating space 25 . Of course, the above driving module can also be integrally integrated with the light source module on the substrate 41 . Similarly, the above-mentioned combination of the reflective member 20 and the casing 10 is not limited thereto, and may also be glued, riveted, or the like. It is worth mentioning that the lighting device 100 further includes a wire 60 installed on the bottom of the housing 10 , and the wire 60 is electrically connected to the light source module 40 .

Cooperate with reference to Fig. 3 to Fig. 5, wherein, define that the section shown in Fig. 3 to Fig. 5 is obtained along the first section line (that is, the A-A direction shown in Fig. 1), and the first section section The line passes through the center of the first lens 32. The first lens 32 includes a ring-shaped first lens body 320 and a first groove 323 recessed from the base 33 , and the second lens 31 includes a second lens body 310 and a recess from the base 33 The second groove 313 is formed. The first lens 32 has a first light incident surface 322 and a first light exit surface 324 arranged opposite to each other. After the lens assembly 30 and the light source module 40 are installed, due to the existence of the first groove 323, the first light incident surface A first cavity 321 for arranging the first light source 42 can be formed between the surface 322 and the first surface 410 (shown in FIG. 2 ). Similarly, the above-mentioned second lens 31 also has a second light incident surface 312 and a second light exit surface 314 arranged opposite to each other. Due to the existence of the above-mentioned second groove 313, when the lens combination 30 and the light source module 40 are installed, the A second cavity 311 for arranging the second light source 43 is formed between the second light incident surface 312 of the second lens 31 and the first surface 410 . In the embodiment of the present utility model, the first light source 42 distributed in a ring shape of the light source module 40 can be placed in the first cavity 321 of the first lens 32. Compared with the prior art, it can A larger number of light sources are arranged in a space, thereby improving the luminous efficiency of the lighting device 100 . In addition, the lens combination 30 can adjust the number of the first light sources 42 inside the first lens 32 accordingly according to the required luminous flux. Moreover, the above-mentioned lens combination 30 can share a variety of packages with good compatibility, and the arrangement of the light sources on the substrate 41 is more flexible.

It is also worth noting that, in the embodiment of the present utility model, the first light incident surface 322 and the first light exit surface 324 of the first lens 32 are set as curved surfaces, and the curvature radius of the first light incident surface 322 is greater than The radius of curvature of the first light emitting surface 324 . Likewise, the second light incident surface 312 and the second light exit surface 314 of the second lens 31 are curved surfaces, and the curvature radius of the second light incident surface 312 is larger than the curvature radius of the second light exit surface 314 . In this way, when the light source of the lighting device is installed in the lens assembly 30, the incident light emitted by the light source completely passes through the lens assembly 30 to be emitted outwards. And the light distribution effect is better. Since the embodiment of the utility model forms a first cavity or a second cavity surrounded by the substrate 41 and the base 33 by bonding the substrate 41 of the light source module 40 and the base 33 of the lens assembly 30 together, therefore, Each of the first light source and the second light source is completely accommodated in the first cavity 321 or the second cavity 311 , which ensures that all incident light can pass through the lens assembly 30 and irradiate to the outside of the lighting device, resulting in high luminous efficiency.

Referring to FIG. 4 , in order to make the light distribution effect of each light source on the lighting device consistent after passing through the above-mentioned lens combination 30 (that is, the output light type is consistent), in this embodiment, the first lens 32 is obtained along the first section line. The surface shape of the first section of the second lens 31 is not consistent with the surface shape of the second section obtained along the first section line of the second lens 31 . In this embodiment, the height of the first lens 32 in the thickness direction of the base portion 33 is not equal to the height of the second lens 31 in the thickness direction of the base portion 33 . That is to say, if the height of the first lens 32 in the thickness direction of the base 33 is defined as: the first vertical distance from the first top 325 of the first lens 32 to the base 33; The height in the thickness direction of 33 is: the second vertical distance from the second top 315 of the second lens 31 to the base 33 , and the above-mentioned first vertical distance can be greater or smaller than the above-mentioned second vertical distance. Certainly, in a preferred embodiment, the above-mentioned first vertical distance is set to be greater than the above-mentioned second vertical distance. 4 and FIG. 9 in particular, the maximum height of the first incident surface 322 of the first lens 32 in the thickness direction of the base 33 is slightly greater than that of the second incident surface 312 of the second lens 31 at the base 33. The maximum height in the thickness direction of , and both are approximately close to the thickness of the base 33 .

Referring to FIG. 6 , it is a schematic structural view of the side of the first lens on which the first light-incident surface is provided. During actual use, a small amount of light sources may not be turned on in the lighting device, which may cause graininess when the human eye observes the lighting device through the lens. In order to eliminate the above-mentioned graininess and enhance the visual effect, in this embodiment, a graininess-removing layer 35 in a concave-convex shape may be formed on the first light incident surface 322 or the first light exit surface 324 of the first lens 30 . The grain-removing layer 35 can be any form of concave-convex structure integrally formed on the first light-incident surface 322 and/or the first light-exit surface 324 of the first lens 32 , such as a "V"-shaped structure. Certainly, the grain-removing layer 35 in a concave-convex shape may also be disposed on the first light-incident surface 322 and the first light-exit surface 324 at the same time. In the same principle, the grain removal layer 35 may also be formed on the second light incident surface or the second light output surface of the second lens 31 .

Referring to Figures 7a and 7b, they are schematic diagrams of the arrangement of the first light source on the light source module in the embodiment of the present invention. Wherein, it can be seen that the number of the first light sources 42 arranged in a ring can be adjusted as required. The distribution angle of the first light sources 42 is defined as: the angle formed by the line between two adjacent first light sources 42 and the center of the ring. Then, the number of first light sources 42 in FIG. 7a is 20, and the distribution angle thereof is 18°. The number of first light sources 42 in FIG. 7b is 40, and their distribution angle is 9°. In the embodiment of the present invention, in order to eliminate the spot phenomenon caused by the stretching direction of the annular first lens 32 being unable to control the light, the first light incident surface 322 or the first light exit surface 324 of the first lens 32 can be A concave-convex structure is formed, and the concave-convex structure may include one or more of an etched structure formed by an etching process and a frosted structure formed by a frosting process. In this embodiment, through the above-mentioned etched structure or frosted structure, the dispersion angle of the incident light generated by the first light source 42 after passing through the first lens can meet a certain requirement.

Referring to FIG. 8 , it is a schematic diagram of a light distribution curve in an embodiment of the present invention. The definition of the above-mentioned dispersion angle refers to: when a bundle of parallel light rays is incident on the first lens 32, the exit light of 1/2 intensity corresponding to half of the maximum value of the exit light intensity is determined, then the dispersion angle is Refers to the angle formed by two outgoing rays of 1/2 intensity. For example, in the light distribution curve in Figure 8, if the maximum intensity of the outgoing light is 1 (the light with the maximum light intensity is concentrated at the normal position of the first lens), then the outgoing light with 1/2 intensity is distributed in the above method The position of ±2.5° of the line position, so at this time, the dispersion angle is 5°.

In order to obtain a uniform light spot, in this embodiment, the etched structure or the frosted structure makes the dispersion angle of the first lens 32 positively correlated with the distribution angle of the first light source 42 . That is to say, when the distribution angle becomes smaller, the size of the above-mentioned dispersion angle needs to be correspondingly reduced, and when the distribution angle becomes larger, the size of the above-mentioned dispersion angle needs to be correspondingly increased. For example: when the distribution angle is 18°, the dispersion angle may be 12°, and when the distribution angle is 9°, the dispersion angle may be 6°.

Referring to FIG. 9 , it is an optical path diagram of the incident light of the light source passing through the lens in the present invention. Both the light-incident surface and the light-exit surface of the lens have a converging effect on the light. Among them, define the angle between the incident ray of the light source and the normal line as a, define the angle between the incident ray of the light source and the normal line obtained by refracting the light incident surface as b, and define the light refracted by the above light incident surface and then pass through The angle between the light refracted by the light exit surface and the normal line is c. Generally, the above-mentioned included angle a is 0°-90°, and after being refracted by the light-incident surface, the above-mentioned included angle b converges to 0°-65°, and after being refracted by the light-emitting surface, the above-mentioned included angle c converges to 0°-50° °. Referring to FIG. 10 , it is an optical path diagram of the light emitted by the first and second light sources passing through the lens combination. If the light type is defined, it is the maximum angle between the outgoing light and the normal after the light generated by the light source is refracted by the lens (the first lens 32 or the second lens 31 ). For example, after the light emitted by the first light source 42 in the first lens 32 is refracted by the first light incident surface 322 and the first light exit surface 324 of the first lens 32, the maximum angle between the outgoing light and the normal line is β1, After the light emitted by the second light source 43 in the second lens 31 is refracted by the second light incident surface and the second light exit surface of the second lens 31 , the maximum included angle between the outgoing light and the normal line is β2. Therefore, the outgoing light pattern of the light emitted by the first light source 42 after passing through the first lens 32 is consistent with the outgoing light pattern of the light emitted by the second light source 43 after passing through the second lens 31. It can be understood that the above-mentioned included angle β1 is the same as the above-mentioned The included angles β2 are equal. It can be seen that in the embodiment of the present utility model, the first lens 32 is arranged in a circular shape, and the second lens 31 is arranged in a point shape. If the cross-sectional shape of the second cross-section corresponding to the point-like second lens 31 is the same, it is difficult to achieve the light emission pattern after the first light source 42 passes through the first lens 32 and the second light source 43 after passing through the second lens 31. The light output light type is exactly the same effect. For this reason, in this embodiment, the sectional surface shape of the first section corresponding to the above-mentioned first lens 32 is set to be inconsistent with the sectional surface shape of the second section corresponding to the above-mentioned second lens 31, thereby realizing the light distribution of the two. same type. Based on the above, the utility model sets the cross-sectional surfaces of the first lens 32 and the second lens 31 to be inconsistent, so that the first lens 32 and the second lens 31 have the same light distribution effect (that is, the above-mentioned angle β1 and The above included angles β2 are equal). Usually, due to the difference in manufacturing process, the point-shaped second lens 31 is a rotationally symmetrical surface, while the ring-shaped first lens 32 is not a rotationally symmetrical surface, assuming that the incident light passes through the point-shaped second lens 31 The maximum included angle β2 between the outgoing light and the normal obtained after is 60°. If the cross-sectional surface type of the ring-shaped first lens 32 is set to be the same as the cross-sectional surface type of the second lens 31, the incident light may pass through The maximum angle β2 between the outgoing light and the normal obtained after passing through such a first lens 32 is usually greater than 60° (for example, 70°-80°). Based on the above reasons, in order to make the ring-shaped first lens 32 and the dot-shaped second lens 31 have the same light distribution effect, the utility model will change the cross-sectional surface shape of the above-mentioned first lens 32 in the process. The maximum included angle β2 between the incident light and the normal obtained after the incident light passes through the first lens 32 is maintained at 60°. In various embodiments of the present invention, the method of changing the cross-sectional surface type of the first lens 32 may include changing the curvature of the first light incident surface 322 and the first light exit surface 324 of the first lens 32, or changing the height of the first lens 32 , or change the width of the first lens 32, etc., the utility model is not limited.

To sum up, the lens combination used in the lighting device of Embodiment 1 of the present utility model can make the incident light emitted by the first light source installed in the first installation space pass through the first light incident surface and the first light exit surface to obtain The output light type is consistent with the output light type obtained by the incident light emitted by the second light source placed in the second installation space after passing through the second light incident surface and the second light output surface, so as to ensure that the lens combination The first lens and the second lens can have the same light distribution effect, and it is avoided to provide each light source with a lens covering the light source, thereby improving the lighting effect of the lighting device.

Example 2

11 to 13, the lighting device 100' of this embodiment may include a housing 10', a face ring 50' connected to the housing 10', and a light source module disposed in the housing 10' 40' and the lens assembly 30' matched with the light source module 40'.

The light source module 40' may include a substrate 41', a number of first light sources 42' arranged in a ring shape arranged on the first surface 410' of the substrate 41', and a plurality of first light sources 42' arranged on the first surface 410' of the substrate 41' One or more second light sources 43'. Wherein, the second light source 43' is located at the center of the ring of the first light source 42'. The above-mentioned first light source 42' and second light source 43' may be light emitting diodes (Light Emitting Diode, LED), or other types of light emitters. The light source module 40' also includes electronic devices (not shown) disposed on the substrate 41'. The light source module 40' can be integrated with a driving power component (not shown) for driving the light source module 40', and the driving power component can be integrated on the first surface 410' of the substrate 41', or connected to the first surface 410'. One surface 410' is opposite to the second surface. Of course, the drive power supply assembly can also be externally installed. As shown in FIG. 14, the lighting device 100' also includes a drive power supply assembly 80', and the drive power supply assembly 80' is connected to the light source module 40' in the housing 10' through the wire 60'. electrical connection.

Correspondingly, the lens assembly 30' may include a base 33' for attaching to the substrate 41' of the light source module 40', a ring-shaped first lens 32' connected to the base 33', and a connecting The second lens 31' is located on the base 33' and is located at the center of the first lens 32'. Wherein, the above-mentioned first lens 32' is arranged in cooperation with the first light source 42' of the above-mentioned light source module 40', and the above-mentioned second lens 31' is arranged in cooperation with the second light source 43' of the above-mentioned light source module 40' of.

It is worth mentioning that the above-mentioned lens combination 30' is a lens component including at least two lenses, and the at least two lenses may be integrated or non-integrated, and the number of lenses included in the lens combination 30' Not limited to this. In the embodiment of the present application, the above-mentioned second lens 31' may be annular or non-annular (such as point). Preferably, if both the first lens 32' and the second lens 31' are annular, then the center of the first lens 32' (that is, the center of the ring presented by the lens) and the ring of the second lens 31' The center is coincidence; if the first lens 32' is annular, and the second lens 31' is point-shaped, then the position of the second lens 31' can be arranged on the center of the first lens 32', and further Specifically, if the second lens 31' is dot-shaped, the center of the dot of the second lens 31' can be set to coincide with the center of the first lens 32'. Of course, in a feasible embodiment of the present application, the mutual positions of the first lens 32' and the second lens 31' are not limited.

Preferably, in order to further improve the luminous effect and aesthetics of the lighting device 100', the above-mentioned lighting device 100' may further include a reflective member 20' arranged in a ring shape between the casing 10' and the face ring 50', so The reflective component 20' surrounds the outer side of the first lens 32'. The reflective component 20' includes an inclined reflective surface 21', a horizontal upper end surface 23' and a lower end surface 25' located at both ends of the reflective surface 21', and is used for the lens assembly 30' to pass through during installation. The opening 22'. Wherein, the reflective surface 21' includes a first reflective surface 211' and a second reflective surface 212', the surface shape of the first reflective surface 211' is an inclined surface, and the surface shape of the second reflective surface 212' is a curved surface. The lower end surface 25', the first reflective surface 211', the second reflective surface 212', and the upper end surface 23' are connected in sequence. Several guide grooves 24' are provided on the upper end surface 23', and a circle of receiving grooves 251' is provided on the lower end surface 25'. A gasket 26' is accommodated in the receiving groove 251' for improving the waterproof sealing of the lighting device 100'. The reflective part 20' can adopt electroplating specular reflection, or diffuse reflection, or absorption type reflection, etc. to achieve glare control. In addition, the reflective surface 21' adopts a partially curved surface and partially straight-faced surface to make the light spot more uniform.

In the embodiment of the present utility model, the housing 10' may include a bottom wall 12' and a side wall 11' connected to the bottom wall 12', and the bottom wall 12' is provided with a plurality of fixing screw holes 13' and positioning columns 14 ', correspondingly, a plurality of through holes 44' are provided on the substrate 41' of the light source module 40'. The base 33' of the lens assembly 30' is provided with a plurality of fixing through holes 34'. The side wall 11' of the housing 10' is also provided with a plurality of fixing screw holes 15' extending from the end surface of the outer surface, and two snap rings 16' are connected to the side wall'.

The face ring 50' comprises a side wall 51' and an annulus 52' connected to the side wall 51'. The inner surface of the side wall 51' is provided with several positioning columns 53', and each positioning column 53' is provided with The rib 54', the positioning column 53' cooperates with the fixing screw hole 15', and the rib 54' cooperates with both sides of the guide groove 24' to play a guiding role when assembling the reflecting component 20'. A plurality of protrusions 55' are provided on the inner surface close to the annular surface 52', and the end surface 23' of the reflective member 20' is positioned between the annular surface 52' of the face ring 50' and the protrusions 55'.

During the installation process, the light source module 40' is first placed on the bottom wall 12' of the casing 10', and during the placement process, the plurality of through holes 44' of the above light source module 40' are fitted into the A plurality of fixing screw holes 13' and positioning posts 14' on the bottom wall 12', and then the lens assembly 30' is placed on the first surface 410' of the substrate 41' provided with the first light source 42', and then placed During the process, the multiple fixing through holes 34' of the lens assembly 30' correspond to the positions of the multiple through holes 44' of the light source module 40', and then the above-mentioned The light source module 40' and the lens assembly 30' are fixed in the casing 10'. Of course, the above-mentioned combination of the light source module 40' and the lens assembly 30' is not limited to this, and can also be glued, riveted, etc. Subsequently, the reflective member 20' is placed on the base 33' of the lens assembly 30', and its reflective surface 21' surrounds the periphery of the first lens 32' disposed on the lens assembly 30', and the bolt 70' passes through the fixing screw hole 16' and accommodated in the positioning column 53' to realize the connection and fixation among the housing 10', the reflective member 20' and the face ring 50'. Similarly, the above-mentioned combination method of the reflective member 20' and the housing 10' is not limited to this, and may also be glued, riveted and the like. With reference to Figures 15 to 17, wherein, defining the cross section shown in Figure 15 to Figure 17 is obtained along the second section line (that is, the B-B direction shown in Figure 11), the second section The line passes through the center of the first lens 32'. The first lens 32' includes a ring-shaped first lens body 320' and a first groove 323' recessed from the base 33', and the second lens 31' includes a second lens body 310' and a first groove 323' formed from the base 33'. The second groove 313' is formed by indenting the base portion 33'. The above-mentioned first lens 32' has a first light-incident surface 322' and a first light-exit surface 324' disposed opposite to each other. When the lens combination 30' and the light source module 40' are installed, due to the existence of the first groove 323' A first cavity 321' for arranging the first light source 42' may be formed between the first light incident surface 322' and the first surface 410' (shown in FIG. 12). Similarly, the above-mentioned second lens 31' also has a second light-incident surface and a second light-exit surface opposite to each other. Due to the existence of the above-mentioned second groove 313', when the lens combination 30' and the light source module 40' are installed, A second cavity 311' for arranging the second light source 43' is formed between the second incident surface of the second lens 31' and the first surface 410'. In the embodiment of the present utility model, the annularly distributed first light source 42' of the light source module 40' can be placed in the first cavity 321' of the first lens 32'. In this embodiment, the first light source 42 'is set in the form of a ring, in other alternative embodiments, such as shown in Figure 18, the first light source 42' is set in the form of two or more rings, so that it can be used in the limited space of the lighting device 100' A greater number of light sources are arranged inside, thereby improving the luminous efficiency of the lighting device 100'. In addition, the lens combination 30' can adjust the number of the first light sources 42' inside the first lens 32' accordingly according to the required luminous flux. Moreover, the above-mentioned lens combination 30' can share a variety of packages with good compatibility, and the arrangement of the light sources on the substrate 41' is more flexible.

It is also worth noting that in the embodiment of the present utility model, the first light incident surface 322' and the first light exit surface 324' of the first lens 32' are set as curved surfaces, and the first light incident surface 322' The radius of curvature is greater than the radius of curvature of the first light-emitting surface 324'. In this way, when the light source of the lighting device is installed in the lens assembly 30', the incident light emitted by the light source completely passes through the lens assembly 30' to be emitted outwards, and the above-mentioned first lens 32' with a curved surface shape can improve the luminous efficiency and configuration. The light effect is better. Since the embodiment of the present utility model adheres the substrate 41' of the light source module 40' and the base 33' of the lens assembly 30' to form a first cavity 321' surrounded by the substrate 41' and the base 33' or the second cavity 311', therefore, each of the first light source and the second light source is completely accommodated in the first cavity 321' or the second cavity 311', so as to ensure that all the incident light can pass through the lens combination 30' Pass and irradiate to the outside of the lighting device, with high luminous efficiency.

Referring to Fig. 15, in order to make the light distribution effect of each light source on the lighting device consistent after passing through the lens combination 30', in this embodiment, the first lens 32' obtained along the second section line The surface shape is not consistent with the surface shape of the second section of the second lens 31 ′ taken along the first section line. In this embodiment, the height of the first lens 32' in the thickness direction of the base portion 33' is not equal to the height of the second lens 31' in the thickness direction of the base portion 33'. That is to say, if the height of the first lens 32' in the thickness direction of the base 33' is defined as: the first vertical distance from the first top 325' of the first lens 32' to the base 33'; 31' in the thickness direction of the base 33' is: the second vertical distance from the second top 315' of the second lens 31' to the base 33', then the above-mentioned first vertical distance can be greater or smaller than the above-mentioned second vertical distance. Certainly, in a preferred embodiment, the above-mentioned first vertical distance is set to be greater than the above-mentioned second vertical distance.

If the outer surface of the ring-shaped first lens 32' is a smooth wall surface, it only controls the light rays in the radial direction X1 and does not control the light rays in the tangential direction X2. The light rays reflected by the reflective member 20' tend to form a bright circle, which affects the light spot. Uniformity. Therefore, in this embodiment, using the lens combination 30' as shown in FIG. 19 can avoid the appearance of bright circles and improve the visual effect. The first light emitting surface 324' of the first lens 30' in this embodiment is provided with a plurality of evenly distributed ribs 321', and the ribs 321' are along the first light emitting surface 324 of the first lens 30'. Specifically, the 'protrusions appear in a curved shape, the ribs 321' extend along the radial direction X1 of the first lens 30', and the projection in the horizontal direction is a straight line. In this embodiment, the curvature of the rib 321' is consistent with the curvature of the first light incident surface' and/or the first light exit surface 324'. By arranging a plurality of equally divided ribs 321' along the extension direction, the light rays in the tangential direction X2 are further dispersed to achieve uniform light spots. Of course, the above-mentioned ribs 321' can also be provided on the first light incident surface 322' and the first light exit surface 324' at the same time. In the same principle, a plurality of equally divided ribs 321' can also be provided on the second light incident surface or the second light exit surface of the second lens 31'.

As shown in Figure 21, the first light-emitting surface 324 of the first lens 32 is a smooth wall surface, the light enters from the first light-emitting surface 322 of the first lens 32, and exits from the first light-emitting surface 324; as shown in Figure 22, the first The first light-emitting surface 324' of a lens 32' is provided with several ribs 321', the light enters from the first light-incident surface 322' of the first lens 32', and exits from the first light-emitting surface 324', as shown in Figure 22 Compared with the optical path shown in Fig. 21, the first lens 32' is relative to the first lens 32, since the first light emitting surface 324' is provided with ribs 321', the light beams incident on different ribs 321' , the light in it exits after being refracted by the ridge 321' at different incident angles, so that the light beam is scattered and emitted, that is, the outgoing light is further scattered, eliminating the fact that the tangential direction X2 of the original first lens 32 cannot control light And produce bright ring problem.

The first light incident surface 322' and the second light incident surface can also adopt an etched structure or a frosted structure, so that the beam angle of the outgoing light obtained after the incident light generated by the first light source 42' passes through the lens 30' Meet certain requirements.

To sum up, the lens combination 30' used in the lighting device of Embodiment 2 of the present utility model avoids the formation of light rays emitted from the light-emitting surface by providing a number of continuous ribs on the light-emitting surface of at least one of the lenses along the extending direction. In the case of a bright circle, the uniformity of the light spot is further improved, and the lighting effect of the lighting device is improved.

The above are only examples of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the scope of claims of the present utility model.

Claims (15)

1. A lens combination for at least placing a first light source and a second light source, characterized in that the lens combination comprises: The first lens, the first lens is ring-shaped, and includes a first light-incident surface, a first light-exit surface, and a first installation space on one side of the first light-incidence surface for arranging the first light source, The first light incident surface and the first light exit surface are curved; and The second lens includes a second light incident surface, a second light exit surface, and a second installation space on one side of the second light incident surface for arranging the second light source, the second light incident surface and the second light incident surface The second light-emitting surface is curved; The first light exit surface and/or the first light incident surface are provided with a number of ribs uniformly distributed along the extension direction of the first lens, and each of the ribs extends in a curved shape along the first lens, And the projection of the ribs in the horizontal direction is a straight line. 2. The lens combination according to claim 1, wherein each of the ridges extends in a curved shape along the radial direction of the first lens. 3. The lens combination according to claim 1, wherein the curvature of the ridge is consistent with the curvature of the first light incident surface and/or the first light exit surface. 4 . The lens combination according to claim 1 , wherein the first lens and the second lens are provided integrally or separately. 5 . The lens combination according to claim 1 , wherein the first lens is in an annular shape, and the plurality of ribs are evenly distributed along the circumferential direction of the first lens. 6. The lens combination according to claim 1, wherein the first lens is configured such that the angle between the incident ray emitted by the first light source and the normal line is greater than that of the incident ray passing through the light incident surface and the angle between the outgoing light and the normal obtained after the light exit surface; the second lens is configured such that the angle between the incident light emitted by the second light source and the normal is greater than the angle between the incident light passing through the incident light The angle between the outgoing light and the normal line obtained after the surface and the light-emitting surface. 7. The lens combination according to claim 1, characterized in that, the second lens is annular or point-shaped, wherein the second lens is annular, and the center of the ring of the first lens and The ring centers of the second lenses are coincident; if the second lenses are point-shaped, the second lenses are located at the ring centers of the first lenses. 8. The lens combination according to claim 7, wherein the surface shape of the first section obtained by the first lens along the first section line is the same as the surface shape of the first section obtained by the second lens along the first section line. The surface types of the two sections are inconsistent, and the first section line passes through the center of the first lens. 9. The lens combination according to claim 7, wherein the second lens is in the shape of a ring, and the second light exit surface and/or the second light incident surface are provided with several The ribs are evenly distributed in the circumferential direction, and each of the ribs extends in a curved shape along the radial direction of the second lens. 10. A lighting device using a combination of lenses, characterized in that it comprises: case; A light source module, located in the housing, the light source module includes a substrate and a first light source and a second light source arranged on the substrate; and The lens combination according to any one of claims 1-8 matched with the light source module. 11. The illuminating device according to claim 10, characterized in that, the illuminating device further comprises a reflective member disposed in the casing and arranged in a ring shape. 12. The lighting device according to claim 11, characterized in that, the reflective member comprises a ring-shaped first reflective surface and a second reflective surface, the surface type of the first reflective surface is straight, and the second reflective surface The face type is curved. 13. The lighting device according to claim 10, wherein the first light source is accommodated in the first lens, and the second light source is accommodated in the second lens. 14. The illuminating device according to claim 13, wherein the first lens is in the shape of a ring, and the first light source is in the shape of a single ring or multiple rings. 15. The lighting device according to claim 10, further comprising a driving power supply assembly electrically connected to the light source module.